Systems and methods for testing power supplies

ABSTRACT

A system and method for testing a power supply. A selection of one or more power supplies to test is received. A tester is automatically configured to test the one or more power supplies utilizing test parameters associated with the selection. A power-end of each of the one or more power supplies is received in power ports of the tester. An adapter-end of each of the one or more power supplies is received in adapter ports of the tester. The one or more power supplies are automatically tested utilizing test parameters. Performance characteristics of the loop one or more power supplies are measured during testing. Indications are given whether each of the one or more power supplies past the testing.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of co-pending U.S. patent applicationSer. No. 13/434,275 filed on Mar. 29, 2012, which is aContinuation-in-Part of U.S. patent application Ser. No. 12/761,003filed on Apr. 15, 2010, now issued as U.S. Pat. No. 8,988,098 on Mar.24, 2015 entitled: SYSTEMS AND METHODS FOR MODULAR TESTING OF CHARGERSthe entire teachings of which are incorporated herein.

BACKGROUND

The use of and development of electronics equipment has grown nearlyexponentially in recent years. The growth is fueled by betterelectronics hardware and software available to organizations andconsumers and the increased appetite for mobile devices. In particular,electronic and mobile devices, such as cell phones, media players,medical equipment, and other similar elements that are battery poweredare being released nearly constantly. Battery powered electronic devicestypically require a power supply or charger that is utilized to powerand/or charge the battery powering the mobile device by convertingelectrical energy passing through the charger into chemical or potentialutilized by the electronic device and energy stored by the battery, ifpresent.

Millions of battery powered devices and their respective chargers arereturned, refurbished, fixed, or otherwise processed each year. Testingpower supplies and chargers may be difficult because of the number ofdevices to be processed, varying interfaces and ports, loadcompatibility, and functional and non-functional characteristics (i.e.,voltage and current). As a result, in many cases re-processed powersupplies and chargers are discarded increasing environmental andmanufacturing waste.

SUMMARY

One embodiment provides a system and method for testing a power supply.A selection of one or more power supplies to test may be received. Atester may be automatically configured to test the one or more powersupplies utilizing test parameters associated with the selection. Apower-end of each of the one or more power supplies may be received inpower ports of the tester. An adapter-end of each of the one or morepower supplies may be received in adapter ports of the tester. The oneor more power supplies may be automatically tested utilizing testparameters. Performance characteristics of the loop one or more powersupplies may be measured during testing. Indications are given whethereach of the one or more power supplies past the testing.

Another embodiment provides a power supply tester. The power supplytester may include a first number of port for receiving an adapter-endof up number of power supplies. The power supply tester may furtherinclude a second number of ports in communication with the first numberof ports through testing circuit. The second number of ports may beoperable to receive a power-end of the number of power supplies forproviding an alternating current signal to the number of power supplies.The power supply tester may further include a power generator forproviding the AC signal for the number of power supplies being tested.The power supply tester may further include a measurement device formeasuring performance information for each of the number of powersupplies during testing. The power supply tester may further include adisplay for displaying the performance information to a user indicatingwhether each of the number of power supplies passed or failed thetesting.

Yet another embodiment provides a power supply tester. The power supplytester may include a first number of ports for receiving an adapter-endof a number of power supplies. The power supply tester may include asecond number of ports for receiving a power-and of the number of powersupplies for receiving an AC signal. The power supply tester may includea power generator for providing the AC signal for the number of powersupplies being tested through the second number of ports. The powersupply tester may include a number of testing circuits for testing thenumber of power supplies utilizing test parameters. The power supplytester may include a measurement device for measuring performanceinformation for each of the number of power supplies during testing. Thepower supply tester may include a database for storing the performanceinformation associated with each of the number of power supplies. Thepower supply tester may include a display for displaying the performanceinformation to a user indicating whether each of the number of powersupplies passed or failed the testing.

BRIEF DESCRIPTION OF THE DRAWINGS

Illustrative embodiments of the present invention are described indetail below with reference to the attached drawing figures, which areincorporated by reference herein and wherein:

FIG. 1A is a pictorial representation of a front view of a chargertester in accordance with an illustrative embodiment;

FIG. 1B is a pictorial representation of a rear-view of a charger testerin accordance with an illustrative embodiment;

FIG. 2 is a circuit schematic representation of the charger tester inaccordance with an illustrative embodiment;

FIG. 3A is a pictorial representation of a charger tester in accordancewith an illustrative embodiment;

FIG. 3B is a pictorial representation of an alternative charger testerin accordance with an illustrative embodiment;

FIG. 4A-B is a pictorial representation of an adapter module inaccordance with an illustrative embodiment;

FIG. 5A-B is a pictorial representation of a load module in accordancewith an illustrative embodiment;

FIG. 6 is a flowchart of a process for testing a charger in accordancewith an illustrative embodiment; and

FIG. 7 is a flowchart of another process for testing a charger inaccordance with an illustrative embodiment.

FIG. 8 is a front view of a power supply tester in accordance with anillustrative embodiment; and

FIG. 9 is a top view of a power supply tester in accordance with anillustrative embodiment.

DETAILED DESCRIPTION OF THE DRAWINGS

Illustrative embodiments provide a modular system for testing powersupplies and chargers. The term charger is utilized to generically referto power supplies, chargers, adapters, or other similar devices,systems, or equipment. In one embodiment, a charger may be testedutilizing a power supply tester or charger tester to determinefunctionality or nonfunctionality of the charger for use with one ormore electronic devices. The charger tester is a device that may beutilized by a user to determine functionality or performancecharacteristics of a charger. Functionality may be determined based onpre-set criteria or based on the performance characteristics of thecharger as measured during simulated operational conditions. Performancecharacteristics may include current, voltage, impedance, temperature,and other similar electrical characteristics of the charger as measuredwhen a load module is modularly connected to the charger tester.

The charger tester may temporarily power the charger during testing. Anadapter module may be connected to the charger tester for receiving anadapter-end of the charger. In another embodiment, the adapter-end mayalso be connected directly to the charger tester. The adapter module maybe selected based on the charger type, battery-powered device for whichthe charger is utilized (which may include make and model), and othermanually or automatically determined information. Similarly, a load orload module may be manually or dynamically applied to the charger by thecharger tester to simulate a standard, maximum, or customized load thatmay be utilized by the charger during operation to determine theperformance characteristics. The charger tester may include a number ofsafety measures including relays, switches, and timers utilized toensure the safety of the user and continued operation of the charger andcharger tester during and after testing of the charger.

Referring now to FIGS. 1A-B, one embodiment of a charger tester 100 isillustrated. The charger tester 100 may include any number ofcomponents, elements, and configurations. In one embodiment, the chargertester 100 may include an AC test outlet 102, an adapter port 104, apower switch 108, a volt meter 110, a power indicator 112, an ammeter114, a load port 116, a circuit breaker 118, an AC power inlet 120, aload module 122, an adapter module 124, a charger 126, a power-end 128,and an adapter-end 130.

The charger tester 100 may be modularly configured to test mobilecharging devices, such as the charger 126. Typically the charger 126 maybe utilized to charge a battery or other energy storage device or totemporarily power an electronic device. For example, the charger 126 maybe utilized to charge a cell phone battery. In another embodiment, thecharger 126 may be a power plug (e.g. power brick), AC adapter,connector, or power plug for powering or charging any electronic device.For example, the electronic device may be solely powered by the charger126. The charger tester 100 may be modularly configured to test thecharger 126. For instance, the adapter module 124 and the load module122 may be selected specifically for testing the charger 326. Themodular connection of the adapter module 124 and load module 122provides flexibility for efficiently testing a number of differentcharger types for reuse rather than discarding or recycling the chargersbased on an unknown condition.

The adapter module 124 is an adapter for interfacing the adapter-end 328of the charger 126 with the charger tester 100 through a port. Theadapter module 124 may be adapted to receive the adapter-end 130 of thecharger 126. The adapter-end 130 may be a standardized interface, suchas those promulgated by a standards body or other technical or industrysource, or a proprietary interface, such as those used by numerouselectronic device manufacturers. In one embodiment, the adapter-end 130may represent a mini or micro USB. In particular, the adapter module 124is configured to connect to the adapter port 104 so that a load andmeasurements may be made as if the charger 126 was actually powering orcharging an electronic device.

The adapter module 124 may be configured to be received by the adapterport 104. In one embodiment, the adapter port 104 is an RJ45 jack/portconfigured to receive an RJ45 head integrated with the adapter module124. For example, the adapter port 104 may be a stainless steel portconfigured for long term repeated use without damaging the adapter port104 when receiving adapter modules. The adapter port 104 and associatedconnector of the adapter module 124 may utilize any number of adaptercombinations suitable for frequent and extensive testing. In anotherembodiment, the adapter module 124 may be integrated with the chargertester 100, but may be removed as necessary for testing distinctchargers. The adapter module 124 is further described in FIGS. 4A-B. Inone embodiment, the insertion of the adapter-end 130 of the adaptermodule 124 may activate power through the charger 126 in response topins 3 and 6 of the adapter module 124 making contact. Contact of thepins at the adapter-end or plugs of the power-end of the charger 126 maybe utilized to automatically initiate testing including providing an ACpower signal to the charger. In one embodiment, relays may be utilizedto implement testing for one or more chargers in response to connectionof the charger 126 to the charger tester 100. In another embodiment, oneor more of the adapter modules may be an integrated part of the chargertester 100.

The load module 122 is a resistive load that is connectable to thecharger 126. The load module 122 may provide a resistive load thatsimulates the load required to charge or power the mobile deviceassociated with the charger 126. The load module 122 may also beconfigured to simulate completely emptied batteries, complex impedanceand resistance characteristics, and other conditions that the charger326 may experience in real world environments. In another embodiment,the load module 122 may provide information that may be read by thecharger tester 100 to configure a dynamic or programmable load. The loadmodule 122 may provide a physical way for the user to verify the loadbeing applied to the charger 126.

In one embodiment, the load module 122 may be configured to supply+/−10% of the rated load. The rated load may be provided based onoriginal equipment manufacturers (OEM) guidelines or specifications forthe associated mobile device. The adapter module 124 and load module 122are modular and may be easily changed out to test alternative electronicdevices providing a user or technician maximum efficiency to test anumber of chargers. The load module 122 may be connected to the loadport 116 of the charger tester 100. The load module 122 is furtherdescribed in FIGS. 5A-B. The rated load may also be varied based on theselected load module to test the charger 126 during extreme operatingconditions.

For example, the load module 122 may include a D-subminiature electricalconnector, such as DB-9 or DE-9 male connector or plug. The load port116 may likewise be a DB-9 or DE-9 female connector or socket. In oneembodiment, the load module 122 may include digital logic, such as aprogrammable digital-to-analog converter (DAC), that is electronicallyread by a processor or logic of the charger tester 100 to programmablyset the load that is applied to the charger 126. For example, the valuestored in the programmable DAC may include a value that is directly orindirectly converted to an amperage applied by the charger tester 100 tothe charger 126. In one embodiment, the charger tester 100 may beconfigured to apply an amperage up to 3 amps. However, the current maybe greater for testing electronic devices with more intense powerrequirements. The charger tester 100 may be configured to execute aprogram or logic to interpret the values of the load module 122 to testthe charger 126. For example, an operator or administrator may program anumber of load modules for testing specific chargers. The load modulesmay be labeled utilizing fixed label, erasable label, or digitalread/out (e.g. a miniature display). As a result, the user mayphysically select and insert the load module 122 providing a morephysical interaction for performing the testing.

The load module 122 and the adapter module 124 may include plastichousings with ergonomics that allow the easy insertion or removal fromthe charger tester 100. The electrical components of the load module 122and the adapter module 124 including pins, traces, wires, paths,resistors, circuitry, logic, and other elements may be similarlyprotected by the housings.

The load port 116 provides a universal configuration for receiving anynumber of load modules. In one embodiment, the load port 116 may beconfigured to receive banana jacks. However, the load port 116 may beused to receive any load module 122 suited for electronically connectinga resistance or impedance to the charger 126 that approximates orsimulates operation of the charger 126 when charging or powering themobile device. The load port 116 may be configured to receive two ormore connectors that are part of the load module 122 for applying theload to the device. The load port 116 provides flexibility for applyingdifferent load modules with different requirements.

The charger 126 is powered through the AC test outlet 102 in response tothe adapter module 124 being inserted into the adapter port 104. The ACtest outlet 102 is a power outlet configured to power the charger 126 atthe designated voltage and current. In one embodiment, the chargertester 100 may include various test outlets or power ports for poweringthe charger 126 at different voltages or in order to interface withdifferent power adapters. For example, the charger tester 100 may beconfigured to interface with European devices that may have differentvoltage and connect requirements and standards. Similarly, the chargertester 100 may include alternative power ports for testing vehicularcharging devices, such as an interface for a power port or cigarettelighter of a vehicle. Alternatively, a USB powered port or otheralternative powers ports may be provided as well. In one embodiment, thecharger tester 100 may utilize multiple test outlets, load and adapter,ports, adapter ports, load ports, various test outlets, power ports, andother components of the charger tester 100 to test multiple devices,simultaneously, serially, or concurrently. For example, a dynamic loadof the charger tester 100 may be configured to test multiple chargers ofthe same type in batches. In another embodiment, distinct charger typesmay be tested utilizing information, identifiers, testing procedures,parameters, and measurements that are distinct.

The volt meter 110 measures the voltage across the charger 126 whilebeing tested. The ammeter 114 similarly measures the current through thecharger 126 during testing. In one embodiment, the volt meter 110 andammeter 114 include a digital display that indicate on an exteriorportion of the charger tester 100 the applicable voltage and currentmeasured by the charger tester 100. The digital display may alsoindicate whether the charger 126 has passed or failed the applicabletest based on manually or automatically determined criteria, tolerances,or thresholds. The volt meter 110 and ammeter 114 may measure anddisplay any number of configured test results including spikes,averages, or other specific tests. The volt meter 110 and ammeter 114may include multiple components for measuring the performance ofmultiple chargers simultaneously. The measurements may also be stored ina database during continuous or repeated measurements.

The AC power inlet 120 provides power to the charger tester 100 andindirectly to the AC test outlet 102. The circuit breaker 118 is anautomatically-operated electrical switch that protects the chargertester 100 and charger 126 under test from damage caused by overload ora short circuit. The circuit breaker 118 discontinues electrical flow inthe event of excessive AC input current to the charger 126 (includingprimary or secondary windings), short circuit, or failure of the loadmodule 122.

The power switch 108 is an electrical switch for electrically activatingthe charger tester 100. The power switch 108 provides a manual switchfor activating or deactivating the charger tester 100. The powerindicator 112 may be utilized to indicate that the charger tester 100 isperforming testing of the charger 126. Alternatively, the powerindicator 112 may also indicate when the charger tester 100 is pluggedin through the AC power inlet 120 and/ or when the power switch 108 hasbeen activated. For example, the power switch 108 may power on the ACtest outlet 102 in response to receiving the adapter module 124 in theadapter port 104 or in response to receiving either end of the charger126.

As shown, the charger tester 100 may be encompassed by plates, panels,or one or more frames that house the circuits, ports, indicators, andother elements of the charger tester. The charger tester 100 may takeany number of shapes and configurations. In another embodiment, thecharger tester 100 may include a display that indicates the current,voltage, load, and internal temperatures of the charger. In response tosome of the tests, the test conditions may vary and the displays of thecharger tester 100 may display the applied parameters as well as themeasured parameters.

Referring now to FIG. 2, a circuit schematic representation of thecharger tester is illustrated. FIG. 2 provides one embodiment of acharger tester circuit 200 that may be part of a charger tester, such ascharger tester 100 of FIG. 1. In one embodiment, the charger testercircuit 200 may include an AC power inlet 202, a circuit breaker 204, apower indicator 206, a power supply 208, a control relay 212, an ACpower outlet 214, a voltmeter 216, an ammeter 218, a load port 220, anadapter port 222, and a DC jack 224.

The charger tester circuit 200 may utilized any number of configurationsand is one implementation of a portion of the components of the chargertester 100 of FIG. 1. For example, the charger tester circuit 200 mayinclude any number of amplifiers, filters, transformers, ports,adapters, boards, memories, processors, chips, programmable logic, andother similar components that, although not explicitly shown, mayfurther enable the processes and functionality of the charger testercircuit 200 as herein described.

The AC power inlet 202 is an interface for receiving alternatingcurrent. The AC power inlet 202 may interface with a power cord,transformer, power interface, or plug for powering the charger testercircuit 200. The power supply 208 converts the alternating current intoa voltage usable by the charger tester circuit 200 to power the internalcomponents and power a charger during testing. As previously disclosed,the power supply 208 may include an interface for regulating the voltagestandard applied to the charger.

The circuit breaker 204 is an automatically-operated electrical switchdesigned to protect the charger tester circuit 200 from damage caused byoverload, short circuit, or overheating. For example, in response to ashort in a charger, adapter module, or load module that begins tooverload the charger tester circuit 200, the circuit breaker 204 maydisable power to the charger through the AC power outlet 214 bydisconnecting power through all or a portion of the charger testercircuit 200.

In one embodiment, the AC power outlet 214 may be a standard 120 Voutlet. Alternatively, the AC power outlet 214 may include power outletsor interfaces for other world standards, vehicle chargers, USB chargers,and the power end of alternative types of chargers.

The control relay 212 is also an electrically operated switch that actsas a safety device. In one embodiment, the control relay 212 mayactivate power between the AC power outlet 214 and the DC jack 224 inresponse to the adapter module being inserted in the DC jack 224. As aresult, the charger tester circuit 200 is self-energized based oninsertion of the adapter module in the DC jack 224 and similarly powereddown in response to removal of the adapter module.

The power indicator 206 may indicate that power is being supplied to thecharger tester circuit 200 or to the AC power outlet 214. For instance,the power indicator 206 may light up when alternating current isreceived through the AC power inlet 202. The power indicator 206 mayalso light up when the AC power outlet 214 is actively supplying avoltage to a charger under test.

The load port 220 provides an interface for receiving the selected loadmodule. The load port 220 may also provide a safety feature by acting asan AC power relay control in conjunction with the adapter port 222. Forexample, the load port 220 may include ports configured to receivebanana plugs. Alternative types of connectors, terminals, and plugs mayalso be utilized for both the load port 220 and the load module. Theload port 220 provides an interface for applying the resistive loadacross the charger tester circuit 200 in order to measure voltage, amps,and other performance characteristics of the charger. As previouslydescribed, the volt meter 216 and the ammeter 218 may measure voltageand current, respectively. In another embodiment, the load port 316 andload module 322 may be replaced by an internal programmable load. Theload may be set utilizing a dial, touch screen, keypad, or externalinterface. For example, the charger tester 300 may include acommunications interface, such as a USB port or Ethernet connection forupdating a test application or logic of the charger tester.

The adapter port 222 provides one example of pins and wiring utilized totest the charger. In one embodiment, the adapter port 222 is configuredto interact with the DC jack 224, such as an RJ-45 jack. The DC jack 224may utilize spring loaded electrical connections to interface with theadapter module, such as an RJ-45 head.

In other embodiments, the charger tester circuit 200 may have morecomplex configurations for receiving user input through a userinterface, such as a touch screen, voice commands, or other elements todynamically configure the charger tester for testing a specified chargertype. For instance, based on information from a user, the charger testercircuit 200 may locally retrieve or look up charger information througha network connection or database stored in memory to select theappropriate configuration and applicable load utilized to test thecharger.

Referring now to FIGS. 3A-B that provide alternative embodiments of acharger tester 300. The charger tester 300 of FIG. 3A may include an ACtest outlet 302, an adapter port 304, a power supply 306, a switch 308,a measurement device 310, a display 312, a load port 316, an overloadprotector 318, a safety switch 320, a load module 322 and an adaptermodule 324. As previously described, the load module 322 and the adaptermodule 324 may be modularly connected or configured to test a charger326 with an adapter-end 328 and a power-end 330. The configuration ofthe charger tester 300 in FIG. 3A generally corresponds to theembodiments of FIG. 1A, FIG. 1B and FIG. 2. All or portions of thecharger tester circuit 200 of FIG. 2 may be implemented in the chargertester 300 of FIGS. 3A and 3B.

The modular design for the load module 322 and adapter module 324 allowsloads and adapters for chargers to be easily replaced in the event offailure and changed out for testing different chargers without havingcharger specific testers.

As previously disclosed, the measurement device 310 may include the voltmeter and ammeter that indicate the voltage and amperage drawn by thecharger 326 during testing. The measurement device 310 may alternativelyinclude other measurement circuits or modular testing elementsconfigured for testing the charger 326, such as an ohm meter, tonesensor, fault detector, and other elements.

In another embodiment, the measurement device 310 may includeindicators, such as light emitting diodes (LED)s, LED screen(s), or atextual display that indicates whether the charger 326 has passed thetest executed by the charger tester 300. In some embodiments, LEDsindicating a test pass, test fail, or testing error may include for eachcharger being tested. The measurement device 310 may function inconjunction with the display 312 to audibly, visually, or otherwiseindicate information and data to a user utilizing the charger tester300. The measurement device 310 may include digital or analog thresholdsor criteria indicating whether the charger 326 has passed a test. Themeasurement device 310 may utilize logic to indicate compliance ornon-compliance of the charger 326 with the criteria.

The load module 322 may also include a safety switch 320. The safetyswitch 320 is a switch that prevents the resistive elements of the loadmodule 322 from overheating or otherwise being damaged during thetesting process. For example, the charger tester 300 may be utilized toperform numerous tests of chargers over an extended amount of time.During that time period, the load module 322 may heat substantially. Asa result, the safety switch 320 provides an additional protection forthe load module 322 that similarly protects the charger tester 300beyond the protections provided by the switch 308 and the overloadprotector 318 as previously described. In one embodiment, the overloadprotector 318 includes a heat sink and fan or blower for dissipating theheat of the charger tester 300. As a result, the heat generated fromtesting one or multiple chargers simultaneously is dissipated. Forexample, the charger tester 300 may be configured to supply up to 3 Athrough each charger simultaneously requiring that significant heat fromthe power supply 306 be expelled to keep the charger tester operational.Dissipating heat may be particularly important for tests that require1-10 minutes a piece. The charger tester 300 is configured to dissipateheat indefinitely during utilization with the heat sink and a blowercooling the components of the charger tester 300.

Turning now to FIG. 3B, the various embodiments of the charger tester300 as herein disclosed may include components, elements and otherconfigurations that may be combined selectively to provide specifiedfeatures and technical configurations for testing purposes. In additionto those elements previously described, the charger tester 300 of FIG.3B may further include a user interface 340, a processor 342, a memory332, a database 334, a scanner 336, a timer 314 and a dynamic load 338.

The timer 314 may be utilized to ensure that the charger 326 is onlytested or energized under test for a specified amount of time. In oneembodiment, the timer 314 is a bi-metallic switch that is configured totest the charger tester 300 for approximately two to five seconds beforedisengaging the circuit powering the charger 326. The bi-metallic switchmay prevent the charger tester 300 from overheating. The bi-metallicswitch may be disengaged based on the time or current that it takes fora bi-metallic strip within the switch to be mechanically displacedthereby tripping the bi-metallic switch and severing the testingcircuit. For example, the bi-metallic switch may disconnect the testingcircuit after a current and/or time has heated the components of thebi-metallic switch to one or more threshold levels. In one embodiment,the bi-metallic switch may be integrated with the load module or dynamicload 338. The bi-metallic switch may disconnect the DC side of thecharger for disconnecting the output of the charger as well as the powerpins of the adapter module 324, such as pins 3 and 6 of an RJ45 jack.

In another embodiment, the timer 314 may be a digital or analog timerthat performs the test for a specified amount of time once the adaptermodule 324 is inserted into the adapter port 304. For example, the timer314 may be configured by a user to engage the circuit between the ACtest outlet 302 and the adapter module 324 for three seconds toimplement the test. However, the test may run for seconds or minutesbased on the applicable testing requirements required by the chargertype, service provider, OEM, or testing party. After three seconds, thetimer 314 disconnects the circuit or voltage applied through the AC testoutlet 302 to the power-end 330 of the charger 326 until the adaptermodule 324 is removed and then reinserted with the same charger 326 oranother charger being tested. Alternatively, the charger tester 300 mayincorporate any number of other timing elements that may ensure that thetesting of the charger does not exceed a specified time period or todistinctly set a time period for testing the charger 326.

In one embodiment, the charger tester 300 is an interactive devicecapable of interacting with the user and similarly retrieving internallyor externally stored information. For example, the charger tester 300may include a wireless transceiver, network adapter, or other similarcards, ports, interfaces, boards, or components for communicating withone or more devices or wired or wireless networks for sending andreceiving data required by the charger tester 300 or informationreceived from a user. For example, as a number of tests are performedfor specific chargers, an identifier, such as a part number or otherlabel, may be associated with each charger and the results of the testfor the charger may be stored in an externally located database that maybe updated based on tests performed utilizing the charger tester 300. Asa result, test results may be automatically or selectively communicatedto one or more external devices, memories, or databases for access orstorage. In another embodiment, the timer 314 may utilize asignificantly increased amount of time. For example, the timer 314 maypower the charger 326 for long enough to thoroughly test the charger 326once heated by resistance. In addition, the charger tester 100 may runmultiple tests on the charger 326 including varying the appliedvoltages, currents, and load.

In one embodiment, the user interface 340 may include one or moreinterfacing elements for receiving user input and information. The userinterface 340 may include a touch screen, keypad, keyboard, scrollwheel, buttons, switches, mouse, or other internally or externallyintegrated peripherals. The user interface 340 may be utilized toreceive information regarding the charger 326 or the associatedelectronic device. For example, the user may access the user interface340 to specify a brand of cell phone or electronic device that ischarged or powered by the charger 326. Based on the user providing thisinformation through the user interface 340, the charger tester 300 mayutilize the memory 332, database 334, or other configurable logic in thecharger tester 300, to configure the dynamic load 338. For example,based on a selection of a Motorola phone associated with the charger326, the dynamic load 338 may be configured to specific load values tobest simulate actual operation of the charger 326 in a real worldenvironment. The database 334 may be updated automatically or manually.For example, OEM or service provider servers or database may be accessedto determine the testing parameters, acceptable threshold and tolerancelevels, and testing scripts or procedures that may be required fortesting associated chargers. The database 334 may be updatedautomatically or in response to the user uploading updates or promptingthe charger tester 300 to find updates.

The processor 342 is circuitry or logic enabled to control execution ofa set of instructions. The processor 342 may be microprocessors, digitalsignal processors, application-specific integrated circuits (ASIC),central processing units, or other devices suitable for controlling anelectronic device including one or more hardware and software elements,executing software, instructions, programs, and applications, convertingand processing signals and information, and performing other relatedtasks. The processor 342 may be a single chip or integrated with othercomputing or communications elements.

The memory 332 is a hardware element, device, or recording mediaconfigured to store data for subsequent retrieval or access at a latertime. The memory 332 may be static or dynamic memory. The memory 332 mayinclude a hard disk, random access memory, cache, removable media drive,mass storage, or configuration suitable as storage for data,instructions, and information. In one embodiment, the memory 332 andprocessor 342 may be integrated. The memory may use any type of volatileor non-volatile storage techniques and mediums.

The memory 332 and/or database 334 may store data, information,specifications, or configurations for a number of chargers andassociated electronic devices. For example, the database 334 may storeconfigurations of the dynamic load 338 for a number of different phonemodels, device types, adapters, versions, and so forth. As a result, theuser interface 340 may more accurately indicate to the user whether thecharger 326 has passed one or more tests based on criteria, parameters,thresholds, percentages and requirements for the charger as stored inthe database 334. The memory 332 and database 334 may be updated througha network connection as previously described. Additionally, the userinterface 340 may include other interfaces, such as a USB port forupdating the database 334 through a thumb drive or other externallyconnected device or storage element. The memory 332 may store testingscripts that run one or more tests on the charger 326 simultaneously orin series. The testing scripts may be executed by the processor 342 totest the functionality and performance characteristics of the charger326.

In one embodiment, the memory 332 may store load values associated witheach adapter module 324, such that when the adapter module 324 isconnected to the charger tester 300 the load values are automaticallyapplied by the charger tester.

In one embodiment, the memory 332 or database 334 may store a table. Thetable may be utilized to look up data or information for configuring thedynamic load. For example, based on user input received through the userinterface 340 or information automatically determined by the chargertester 300, the table may configure the dynamic load 338. The table mayalso be utilized to determine functionality or non-functionality of thecharger 326 based on the performance characteristics measured duringtesting of the charger 326. For example, based on threshold values forvoltage, current, and resistance, the table may display a pass or failindicator through the user interface 340. The table may store a numberof threshold values for passing, failing, or generating a diagnostic foreach charger.

In one embodiment, different OEMs or service providers may have specifictest configurations, scripts, specifications, tolerances, or parametersthat are required for chargers utilized or associated with theircompany, products, or network. In another embodiment, the charger tester300 may include the scanner 336. The scanner 336 may automaticallydetermine the charge testing parameters and information associated withthe charger 326.

In one embodiment the scanner 336 is a barcode scanner that scans abarcode, numbers, engravings, or other markings engraved on or attachedto the charger 326 by a sticker, label, or other indicator. The scanner336 may communicate with the processor 342 and memory 332 to retrievethe relevant charge testing information. As a result, based on one ormore scans, any number of devices may be tested utilizing a singleparameter or test script. Similarly, the scanner 336 may note specificinformation for each charger 326, such as an item identification numberto store the results of the test to further distribute, recycle, scrap,or otherwise process one or more chargers based on the results ofsuccessful or unsuccessful tests. Most chargers include an attached orengraved label, identification, or bard code. In one embodiment, thescanner 336 is an optical imager that utilizes optical characterrecognition to determine the applicable voltage, amperage, manufacturer,and applicable load. The scanner 336 may utilize a light, flash, ordifferent imaging processes to distinguish the writing of the labelespecially where the background color and the writing are the same color(e.g. black background of the charger has black writing or white writingon a white background.

In another embodiment, the scanner 336 may be a radio frequencyidentification (RFID) tag reader. The RFID tag reader may identify orretrieve information from an RFID tag integrated with the charger 326 orassociated with the corresponding mobile device. The charger tester 300may similarly configure the dynamic load 338 based on the RFID tag orthe barcode to quickly and efficiently implement testing.

Loads may be applied by the dynamic load utilizing electronic switchinghaving specific data read from the OEM stored file by scanning thecharger or associated electronic device or determining the IMEI of thephone with which the charger is associated. The dynamic load 338 mayrepresent a physical resistive array and may be configured based on theload requirements of the charger. For example, OEM Motorola requires 5ohms at 10 watts; this configuration may be created by selecting theactual single resistor or a combination of resistors (in series orparallel) which equates to the needed load. Another charger tester 300or method may utilize a similar resistive array that is manuallyselected by a user though a series of switches for the specific chargerunder test.

In yet another embodiment, the charger tester 300 may be utilized tointerface with batteries or other energy storage devices. The conditionand status of the battery may be tested utilizing the charger tester 300and one or more interfaces adapted to connect the battery to the chargertester 300. The charger tester 300 may include sense lines for feedbackand thermal sensing. The charger tester 300 may be utilized to testindividual cells or arrays of cells within the battery to determinefunctionality and capabilities of the batteries under test. The batterytesting function of the charger tester 300 may allow use of commoncircuitry and functions including AC and DC power elements. The chargertester 300 may also enable data transfer of battery status for recordkeeping and may include multiple interfaces allowing for simultaneoustesting of different battery types. After charging is complete thevariable load array may be selected to implement battery testing,allowing the charger tester 300 to select an electronically proper load.Test results may be saved, archived, or accessed as needed. The modularelements of the charger tester 300 provide an integrated approach thatrequires less redundant circuitry than a separate standalone unit fortesting chargers or batteries. In the event of failure of one or moreelements of the charger tester 300, replacing modular or otherwisefixing the charger tester 300 is quick and cost effective.

In one embodiment, the charger tester 300 may be configured to testmultiple chargers sequentially or simultaneously. As a result, thecharger tester may include multiple ports for receiving the relevantadapter modules and load modules. The other components of the chargertester 300 may be similarly configured.

In another embodiment, the processor 342 may execute a script to scanthe charger 326. The scan may provide characteristics of the charger326. The results of the scan may be compared to other scan results todetermine the type and configuration of the charger 326 in order toconfigure the dynamic load 338 and the tests run by the charger tester300.

Referring now to FIGS. 4A-B, FIG. 4A illustrates a front-view of adaptermodules 402, 404, 406, and 408. FIG. 4B illustrates a top-view of theadapter module 402 which is similarly representative of other adaptermodules. The adapter modules 402, 404, 406, and 408 include ports 410,412, 414, and 416, and connector 418.

The adapter modules 402, 404, 406, and 408 represent a few of manypossible adapter modules that may be utilized with the charger tester totest or evaluate different types of chargers. As is well known, many ofthe chargers may utilize DC connectors or adapter-ends with specificvoltages, polarity, current rating, power supply filtering andstability, and mechanical configurations that are incompatible withother chargers and mobile devices. The ports 410, 412, 414, and 416 areconfigured to receive specific types of adapter-ends of the chargers.For example, the ports 410, 412, 414, and 416 may be configured toreceive mini or micro-USB connectors and numerous other types ofadapter-ends of the chargers associated with handset manufacturers,services providers, and standards.

The pins, traces, or electrical connection elements of the ports 410,412, 414, and 416 are connected to the connector 418. The connector 418is a uniform adapter that allows the adapter modules 402, 404, 406, and408 to be connected to the charger tester through a single port or jack,such as, for example, through the adapter port 222 of FIG. 2. The pins,leads, or connectors of the ports 410, 412, 414, and 416 and connector418 allow the charger to be tested as if it were connected to an actualelectronic device for charging or operation.

In one embodiment, the charger tester may supply power through thecharger in response to a user inserting the connector 418 into acorresponding port of the charger tester. In one embodiment, theconnector 418 represents an RJ45 head or connector. The connector 418may be an RJ45 head based on know data regarding reliability anddurability over time. RJ45 heads are also easily identifiable, oriented,and inserted or removed from the charger tester. In one embodiment, theconnector 418 may not include a locking tab that locks once inserted ina corresponding jack or port. Alternatively, the connector 418 may beany number of other male-connector types including USB or other similarconnector types.

FIG. 5A illustrates a front-view of load modules 502, 504, 506, and 508.FIG. 5B illustrates a side view of the load module 502. With regard toFIGS. 5A-B, the load modules 502, 504, 506, and 508 are resistive loadsthat simulate the load placed on a charger during the charging process.The load modules 502, 504, 506, and 508 may include two or moreconnectors 510 and 512. The connectors 510 and 512 electrically connectthe resistive load of the load modules 502 to the charger to completethe testing circuit. For example, the connectors 510 and 512 may beconnected across the load port 220 of FIG. 2 to apply a load across thecorresponding portions, pins, or conductors of the charger. Theconnectors 510 and 512 may be banana connectors or other similarconnectors or terminals.

In one embodiment, the load modules 502, 504, 506, and 508 (and theadapter modules 402, 404, 406, and 408 of FIG. 4) may be labeled,engraved, or color coded to indicate a charger or mobile device typeassociated with the load module and the orientation of the load modules502, 504, 506, and 508 for connection to the charger tester. Thisinformation may be automatically or manually scanned or read by thecharger tester. In one embodiment, the charger tester includes a singleload port configured to receive the two or more connectors of the loadmodules 502, 504, and 506. However, the charger tester may alternativelyinclude additional ports or the ports may be configured to receivealternative types of connectors as shown by load module 508. In oneembodiment, multiple load modules may be utilized to reach a specifiedresistive load.

The adapter modules 402, 404, 406, and 408 of FIG. 4 and the loadmodules 502, 504, 506, and 508 of FIG. 5 may be replaced or changed outin response to failure due to repeated use or other problems. As aresult, the charger tester may be reconfigured and continue to remainoperational despite failures of the modular components. The switches andports, such as the adapter port and load port, of the charger tester mayalso be modularly integrated with the charger tester in order to replaceor exchange portions of the charger tester as needed. In anotherembodiment, the adapter modules 402, 404, 406, and 408 of FIG. 4 and theload modules 502, 504, 506, and 508 of FIG. 5 may be integrated with thecharger tester so that only the adapter-end or power-end of the chargeris inserted into the charger tester.

FIG. 6 is a flowchart of a process for testing a charger in accordancewith an illustrative embodiment. The process of FIG. 6 may beimplemented by a user 602 and a charger tester 604 in accordance withone embodiment. The order of the steps in FIGS. 6 and 7 may be variedbased on environment, conditions, and user preferences.

The process may begin with the user 602 retrieving a charger for testing(step 606). The charger may be tested as part of a returns, replacement,refurbishment, or repair process or other procedure that may requireverification of the functionality of the charger.

Next, the user 602 selects an adapter module and a load module for thecharger (step 608). The adapter module and the load module representadapters or modules for testing the specific model or type of charger.The adapter module and the load module may include labels, markings orother indicators associating each with one or more makes, models, ortypes of mobile devices for identification by a user or automatedelement, such as a scanner.

Next, the user 602 plugs the power-end of the charger into the powerport and the load module into the load port of the charger tester (step610). In other embodiments, the charger tester may be utilized to testchargers for vehicles, battery packs, or other similar electronicelements.

Next, the user 602 plugs the adapter-end of the charger into the adaptermodule and the adapter module into the adapter port of the chargertester (step 612).

Next, the charger tester 604 automatically activates power to the powerport in response to the adapter module being received in the adapterport (step 614). As previously described, both the load module and theadapter module must be electrically connected to the charger tester inorder for the charger to be energized.

Next, the charger tester 604 measures the current and voltage throughthe charger to determine functionality or non-functionality of thecharger (step 616).

Next, the charger tester 604 displays the measurements and indicators tothe user (step 618). The measurements and indicators may be displayed inalphanumeric format or utilizing visual indicators, such as a screen,green or red LEDs, or other displays to indicate that the charger haspassed or failed according to specified parameters stored by the chargeror utilized by the user 602.

Simultaneously, the user 602 reviews the displayed measurements todetermine functionality of the charger (step 620). The display may alsoflash red or green or words, such as “Pass” or “Fail.” Where multiplechargers are being tested simultaneously, the charger tester 604 mayinclude pass or fail LEDs for each charger.

The charger tester 604 may also deactivate the power to the power portin response to a time period expiring (step 622). The power may bedeactivated utilizing a timer, a bi-metallic switch, or other timingelement.

FIG. 7 is a flowchart of another process for testing a charger inaccordance with an illustrative embodiment. The process of FIG. 7 may beimplemented by a charger tester based on interaction with a user to testa charger. The process may begin by receiving information from a userabout a charger (step 702). The information may include functionalparameters for the charger and the associated mobile device. Forexample, the information may specify a make, model, operating systemversion, or other information associated with the charger. In oneembodiment, the charger tester may include a scanner, such as a barcodescanner that scans a barcode or other identification information on thecharger.

Next, the charger tester receives the charger for testing (step 704).For example, the power-end of the charger may be connected to thecharger.

Next, the charger tester determines an appropriate load for testing thecharger in response to the information (step 706). For example,particular brands of charger testers may require a specified resistiveload to simulate the load required to charge the mobile device. The loadmay also be varied during testing to ensure functionality at minimum tomaximum load parameters.

Next, the charger tester dynamically configures the load of the chargertester (step 708). The charger tester may also set fixed or variabletesting parameters and how the test results are recorded.

Next, the charger tester activates power to the charger in response toan adapter-end of the charger connected to an adapter module beingconnected to an adapter port and a load configured (step 710). Thecharger tester may power the charger in response to determining orsensing that the adapter module has been inserted in the test port. Inanother embodiment, insertion of the adapter module automaticallycompletes the testing circuit to initiate testing.

The charger tester measures the current and voltage through the chargerto determine functionality or non-functionality of the charger (step712). The determination may be made based on testing or measurementsscripts or programs executed by the charger tester.

Next, the charger tester displays the measurements and indicators to theuser (step 714). The measurements and indicators may also be storedand/or communicated to an external device.

The charger tester deactivates the power to the power port in responseto a time period expiring (step 716). The time period may be determinedelectronically or mechanically. For example, a digital or analog timeror bi-metallic switch may be utilized. The timer may disconnect power tothe charger after a period of two to five seconds as set by testingparameters or a user. The bi-metallic switch may disconnect power to thecharger in response to a temperature of the bi-metallic switch reachinga certain point or overheating due to current passing through thebi-metallic switch. The process of FIG. 7 may be similar to the processof FIG. 6.

FIG. 8 is a front view of a power supply tester 800 in accordance withan illustrative embodiment. The power supply tester 800 is anotherembodiment of the charger testers that are herein described. The powersupply tester 800 may be configured for testing one power supply at attime or may be configured to include additional components for testingmultiple power supplies simultaneously. In one embodiment, the powersupply tester 800 may include a power switch 802, a USB connector 804, adisplay 806, and a connector 808.

The power switch 802 is utilized to turn on and off the power supplytester 800 for testing power supplies. For example, the power supplytester 800, may include a separate AC connection for powering thecomponents of the power supply tester 800. For example, the power switch802 may be a push-button or toggle switch.

The USB connector 804 is a connection utilized to receive programminginformation and data. The programming information and data may beutilized to store a program or instructions for testing each type orcategory of power supply. For example, the USB connector 804 may beconnected to a memory that is updated with new programming in responseto the power supply tester 800 being updated by another computing orcommunications device. The power supply tester 800 may be updatable toreceive a new operating system, kernel, or applications that functionindependently or together to perform the power supply testing. Inanother embodiment, the power supply tester 800 may include an FPGA thatis updated to perform the testing in response to new programming orinstructions. The programming may indicate the voltage, current, andload applied to each power supply based on type, configuration, test andso forth. For example, the programming and configuration of the powersupply tester may correspond to an identifier, such as a moduleconnected to the connector 808, such as a DAC or EEPROM module. Theidentifier may be read by the power supply tester 800 from the connector808 and the identifier may be associated with the information, data orparameters utilized to perform the testing of the power supplies by theprogramming.

The display 806 is a display that verifies the current settings andprogramming being utilized by the power supply tester 800. For example,the display 806 may indicate the current and voltage being applied bythe power supply tester 802 a power supply and corresponding limits orthresholds of both the power supply tester 800 and acceptable outputresults from the power supply.

The connector 808 is configured to receive a load module. In oneembodiment, the load module includes a DAC or EEPROM that is read by thepower supply tester 800 to indicate a resistive load, voltage, current,and thresholds for each to be applied to the power supply. The loadmodule may also indicate the expected output results of the powersupply. As a result, the display 806 may display both the applied orinput current, voltage, and resistive load, as well as the expectedoutput of the power supply including ranges, parameters, or thresholds.In another example, the load module may include an actual resistiveload.

FIG. 9 is a top view of the power supply tester 800 of FIG. 8 inaccordance with an illustrative embodiment. The power supply tester 800may include a DC output connector 810, an AC connector 812, LEDs 814,816, and 818, a voltage display 820, a current display 822, and AC powerindicator 824.

The DC output connector 810 is configured to receive an adapter module.In one embodiment, the DC output connector 810 is an RJ-45 portconfigured to receive an adapter module with an RJ-45 head. In anotherembodiment, the DC output connector 810 may be configured to receive theDC end of the power supply directly. The DC output connector 810 mayalso include a number of ports for different plug types.

The AC connector 810 is utilized to energize and power the power supply.The LEDs 814, 816, and 818 may indicate whether the power supply passed,failed, or if there was an error with the power supply tester 800,respectively. The AC connector 810 may also display text basedinformation or results on any of the displays of the power supply tester800.

The voltage display 820 may be display the voltage output from the powersupply and may communicate with a voltmeter of the power supply tester800. The current display 822 may display the current output from thepower supply and may communicate with an ammeter of the power supplytester 800. The AC power indicator 824 may indicate whether AC power isbeing provided to the one or more power supplies under test. The ACpower indicator 824 may also indicate whether the power supply tester800 is turned on.

The previous detailed description is of a small number of embodimentsfor implementing the invention and is not intended to be limiting inscope. The following claims set forth a number of the embodiments of theinvention disclosed with greater particularity.

What is claimed:
 1. A method for testing a charger, the method comprising: receiving a charger at a charger tester, wherein the charger tester is configurable to test a plurality of charger types utilizing test parameters associated with each of the plurality of charger types, wherein the test parameters include a load that is dynamically configured for application to a charger type of the charger; automatically testing the charger utilizing the test parameters; measuring performance characteristics of the charger during testing; and indicating a result of the testing.
 2. The method according to claim 1, wherein receiving the charger at the charger tester comprises: receiving a power-end of the charger in a power port of the charger tester; and receiving an adapter end of the charger in an adapter port of the charger tester;
 3. The method according to claim 2, comprising automatically activating the charger tester to power the charger in response to the power-end of the charger and the adapter end of the charger connecting to the charger tester.
 4. The method according to claim 2, wherein the power-end of the charger is an ungrounded plug with two flat parallel prongs.
 5. The method according to claim 2, wherein the power-end of the charger is a grounded plug with two flat parallel prongs and one round pin that is longer than the two flat parallel prongs.
 6. The method according to claim 1, comprising receiving information from a user interface of the charger tester associated with the charger type of the charger to set the test parameters that are associated with the charger type.
 7. The method according to claim 1, wherein the performance characteristics are stored in a database and associated with an identifier for each of the plurality of charger types.
 8. The method according to claim 1, wherein an adapter end of the charger is connected to an adapter module that connects to the tester.
 9. The method according to claim 1, wherein an AC signal provided to the charger is varied according to the test parameters.
 10. The method according to claim 1, wherein indicating the result of the testing comprises: activating one or more LEDs to indicate whether the charger passed the testing.
 11. The method according to claim 1, further comprising: automatically deactivating power to the charger in response to a safety threshold being exceeded.
 12. A charger tester, comprising: an adaptor port operable to receive an adapter of a charger; a power port operable to receive a power-end of the charger, wherein the power port provides an alternating current (AC) signal to the charger; a power supply operable to provide the AC signal to the power port; a measurement device operable to measure performance information of the charger during testing; and a visual indicator operable to display the performance information to a user indicating whether the charger passed the testing.
 13. The charger tester according to claim 12, wherein the charger tester is configured to perform a test on the charger using test parameters associated with a charger type.
 14. The charger tester according to claim 13, wherein the test parameters specify a load associated with the charger.
 15. The charger tester according to claim 12, further comprising: a database for storing the performance information associated with a plurality of chargers.
 16. The charger tester according to claim 12, further comprising: a user interface operable to receive information associated with a charger type of the charger to set test parameters that are associated with the charger type and used by the power supply tester.
 17. The charger tester according to claim 16, wherein the user interface includes a scanner for reading a label or an identifier associated with the charger.
 18. The charger tester according to claim 12, wherein the visual indicator includes one or more LEDs that indicate whether the charger passed the testing.
 19. A charger tester for testing chargers, comprising: a first port operable to receive an adapter of a charger; a second port operable to receive a power-end of the charger, the second port configured to provide an alternating current (AC) signal to the charger; a power supply operable to provide the AC signal to the second port; a measurement device operable to measure performance information of the charger during testing; a display for displaying the performance information to a user indicating whether the charger passed the testing.
 20. The charger tester of claim 19, comprising: a switch in communication with a power generator, wherein the switch is configured to communicate the AC signal to the charger and an associated testing circuit in response to the power-end of the charger-and the adapter of the charger connecting to the charger tester; and a timer in communication with the power supply, the timer operable to deactivate the AC signal to the charger in response to a time period elapsing from when the charger began to be tested. 